1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58for checking performanceICS 37.080Micrographics Rotary camera systems Test target BRITISH STANDARDB
2、S ISO 10594:2006BS ISO 10594:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2006 BSI 2006ISBN 0 580 49332 6Amendments issued since publicationAmd. No. Date CommentsThis publication does not purport to include all the necessary
3、 provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of ISO 10594:2006. It supersedes BS ISO 10594:1997 wh
4、ich is withdrawn. The UK participation in its preparation was entrusted by Technical Committee IDT/1, Document management applications, to Subcommittee IDT/1/1, Quality.A list of organizations represented on IDT/1/1 can be obtained on request to its secretary.Reference numberISO 10594:2006(E)INTERNA
5、TIONAL STANDARD ISO10594Second edition2006-09-15Micrographics Rotary camera systems Test target for checking performance Micrographie Systmes de camras cintiques Cible de contrle pour vrifier la performance BS ISO 10594:2006ii iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative refer
6、ences . 1 3 Terms and definitions. 2 4 Description of the test target. 2 4.1 Characteristics of the base 2 4.2 Test target layout 2 4.3 Contrast . 2 4.4 Identification 2 5 Microfilming of the test target . 5 5.1 Exposure setting. 5 5.2 Feed 5 5.3 Number of exposures. 5 6 Test target evaluation proce
7、dure 5 6.1 Microscope 5 6.2 Mechanical performance 5 6.3 Optical quality (resolving power) 5 6.4 Reduction ratio 5 6.5 Legibility test. 6 7 Results of the tests. 6 Annex A (informative) Characteristics of rotary camera 8 Bibliography . 10 BS ISO 10594:2006iv Foreword ISO (the International Organizat
8、ion for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established h
9、as the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Int
10、ernational Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Public
11、ation as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent ri
12、ghts. ISO 10594 was prepared by Technical Committee ISO/TC 171, Document management applications, Subcommittee SC 1, Quality. This second edition cancels and replaces the first edition (ISO 10594:1997), which has been technically revised. BS ISO 10594:2006vIntroduction This International Standard ha
13、s been prepared to provide a means of checking the quality of output of rotary camera systems. Rotary cameras have certain characteristics that require a different form of test target from that specified for checking planetary cameras in ISO 10550. The processes of microfilming may result in the pro
14、duction of an image that is in some way inferior to that of the original document. In order to keep such deterioration within acceptable limits, the output of the camera needs to be checked regularly so that faults can be corrected and any necessary adjustments made. BS ISO 10594:2006blank1Micrograp
15、hics Rotary camera systems Test target for checking performance 1 Scope This International Standard specifies a test target and a method for checking the optical and mechanical performances of rotary cameras used for producing 16 mm microfilm. This test target and method can be used for evaluating t
16、he performance of cameras (e.g. before purchase to establish initial reference), acceptance tests (e.g. confirming purchase specifications after maintenance), and routine checking (e.g. weekly or monthly). NOTE The characteristics of a rotary camera are indicated in Annex A. 2 Normative references T
17、he following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 5-2:2001, Photography Density measurements Par
18、t 2: Geometric conditions for transmission density ISO 5-3:1995, Photography Density measurements Part 3: Spectral conditions ISO 5-4:1995, Photography Density measurements Part 4: Geometric conditions for reflection density ISO 446, Micrographics ISO character and ISO test chart No. 1 Description a
19、nd use ISO 2471:1998, Paper and board Determination of opacity (paper backing) Diffuse reflectance method ISO 3334, Micrographics ISO resolution test chart No. 2 Description and use ISO 6196-1, Micrographics Vocabulary Part 1: General terms ISO 6196-2, Micrographics Vocabulary Part 2: Image position
20、s and methods of recording ISO 6196-3, Micrographics Vocabulary Part 3: Film processing ISO 6196-4, Micrographics Vocabulary Part 4: Materials and packaging ISO 6196-5, Micrographics Vocabulary Part 5: Quality of images, legibility, inspection ISO 6196-6, Micrographics Vocabulary Part 6: Equipment B
21、S ISO 10594:20062 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 6196-1, ISO 6196-2, ISO 6196-3, ISO 6196-4, ISO 6196-5 and ISO 6196-6 apply. 4 Description of the test target 4.1 Characteristics of the base The test target shall be made on a white o
22、paque base. Its visual diffuse reflection density, measured as specified in ISO 5-3 and ISO 5-4, shall not be more than 0,08. Its opacity, measured as specified in ISO 2471, shall be over 85 %. This test target shall be positive-appearing. 4.2 Test target layout The test target shall comprise the fo
23、llowing, arranged as shown in Figures 1 and 2 (ISO test chart No. 1 shall comply with ISO 446 and ISO test chart No. 2 shall comply with ISO 3334): 3 double columns, one each at the right, centre, and left of the target, consisting of groups either of ISO test chart No. 1 characters, ranging from ch
24、aracter 56 to character 280, in a line, or of ISO test chart No. 2 patterns, ranging from 7.1 to 1.4; 2 series of lines composed of upper-case and lower-case printed characters arranged in portrait form in the centre of the left side of the target and in landscape form in the centre of the right sid
25、e; 2 series of 2 columns of frequency ladder patterns of 1.8, 2.0 line pairs/millimetre, to the left of centre; and 2.5, 3.2 line pairs/millimetre, to the right of centre; at least one reference scale, graduated in millimetres, between 2 frequency ladder patterns; an arrow to indicate the direction
26、of feed, large enough to permit measurement of density (see 4.3) and parallel to the columns of frequency ladder patterns; 2 perpendicular lines, one 220 mm in length, the other 200 mm in length (parallel to the frequency ladders), that cross within the target. The intersection is marked with a circ
27、le to indicate their use as an orthogonality check. The ends of the lines are clearly marked and their lengths shown on the test target, for use in checking effective reduction ratio. 4.3 Contrast When measured in accordance with ISO 5-3 and ISO 5-4, the minimum difference in visual diffuse density
28、between the base of the target and the printed features, e.g. the arrow (see 4.2), shall be 1,3. 4.4 Identification The following elements shall appear, as text (excluding quote marks), on the test target: “rotary camera test target”; “certifying agent /source of issue”. BS ISO 10594:20063Figure 1 L
29、ayout for test target with ISO test chart No. 1 BS ISO 10594:20064 Figure 2 Layout for test target with ISO test chart No. 2 BS ISO 10594:200655 Microfilming of the test target 5.1 Exposure setting The exposure should be set to produce a background density of the microimage of the test target within
30、 the range 1,0 to 1,3, measured in accordance with ISO 5-2 and ISO 5-3. To check the background density, film a blank sheet of the same type of paper if available from the supplier, as used for the test target and measure the density of the microimage. If blank target stock is not available, use a p
31、lain white paper of 85 % reflectance as measured in accordance with ISO 5-4:1995. Be certain to re-set the camera exposure to the correct value for the documents being filmed. 5.2 Feed Feed the test target into the rotary camera in the direction of the arrow (see Figures 1 and 2). If the width of th
32、e camera aperture exceeds the size of the test target, move the target along the aperture and film it as many times as are necessary to cover the entire width. If the width of the camera aperture is less than the size of the test target, cut the test target in the direction of the arrow, into strips
33、 that fit the aperture and film all the strips in succession. 5.3 Number of exposures For set up and after major repairs, microfilm the test target a minimum of 10 times. Number the microimages from 1 to 10 for the control. For routine production, it is not necessary to film the target 10 times. In
34、the case of a camera that microfilms the front and back sides of the document simultaneously (duplex), the test shall be performed checking both the front and rear field. If the camera is capable of microfilming multiple rolls of film simultaneously, the above evaluation method shall be repeated for
35、 each roll. If only a portion of the photographic field is used in production, the above evaluation method may be applied to evaluate only that portion of the photographic field used. 6 Test target evaluation procedure 6.1 Microscope Use a microscope that has a good quality achromatic objective, a m
36、agnification between 50:1 and 150:1 and some means of measuring image size. 6.2 Mechanical performance If there is any defect in the mechanical transport of the test target or film, some lines of the ladder patterns will appear blurred on the microimage. Examine the ladder patterns for signs of blur
37、ring whether general or intermittent (see 6.3). 6.3 Optical quality (resolving power) Examine the microimages of the test charts and determine the resolving power in accordance with ISO 446 or ISO 3334, paying particular attention to any blurring (see 6.2). 6.4 Reduction ratio Check the cameras redu
38、ction ratio by comparing the length of the reference lines on the original test target with the length of their microimage. BS ISO 10594:20066 6.5 Legibility test To check legibility, examine the lines of characters on the microimage. 7 Results of the tests Record the results of the tests and keep t
39、hem. For microimages recorded in modes other than simplex or on multiple rolls simultaneously, record the least favourable results for each arrangement. Record the information listed on the data sheet shown in Figure 3. BS ISO 10594:20067DATA SHEET 1 Microfilming procedure date of microfilming; test
40、ing purpose (performance, routine, maintenance, reception, ); camera number; type of camera used; type of film used; nominal reduction ratios used; microimage background density; camera operator. 2 Results on each of the microimages produced 2.1 Transport evenness, checked on frequency ladder patter
41、ns 2.2 Actual reduction ratio measured dimension of the microimage of the reference scale. 2.3 Patterns resolved (ISO test chart No. .) Smallest character or pattern read in the centre on each side. Note its location. 2.4 Size of smallest printed characters read Horizontal characters pt/mm Vertical
42、characters pt/mm 3 Comments Figure 3 Information for data sheet BS ISO 10594:20068 Annex A (informative) Characteristics of rotary camera A.1 General The primary appeal of rotary cameras is a high throughput rate. To satisfy the needs of the business community, endorsers and sequential imprinters st
43、amp the documents while in motion, thus introducing the possibilities of hesitation in the transport of the documents or produce vibrations of the optical image during exposure. These functions may reduce the microimage quality. A.2 Film and document movement A.2.1 Synchronization Keeping the film a
44、nd document in synchronization is one of the most important aspects of rotary microfilming. Generally, a ladder test target is used to observe the lack of synchronization between the movement of the film and the document allowing examination of the mechanical operation of the camera. If there is a m
45、omentary synchronization problem, often called “loss line” or “glitch”, it will appear as a blurring of a small group of lines in the ladder patterns in the test target. As the blur occurs in the direction of travel of the film, lines perpendicular to the direction of travel will be blurred in that
46、narrow area across the width of the film; however, lines parallel to the direction of travel will not show such a loss in resolution. This effect will extend across the entire frame as a narrow band of slightly degraded image quality but legibility may still be maintained. In a printed document, it
47、may affect only one line of printing (see Figure A.1). Normal wear in both the film and document drive may cause a lack of synchronization. A.2.2 Focus The film is generally driven around the circumference of a capstan drive roller. This roller must be a precise cylinder or the image will move in an
48、d out of focus. This is even more critical at high reduction ratios where the depth of focus of the lens is very small. A.2.3 Maintenance Because of the high speed movement of the documents and the method of transport, a large quantity of paper dust is generated in the camera. Glass-guides, mirrors,
49、 as well as other components within the machine become very dirty and require continuous and proper maintenance to maintain quality. When the camera is determined to be in optimum operating condition, a test target should be filmed and recorded as a reference base. Comparison of future test results with the reference base should help to determine when service is required. A.3 Quality of original documents The quality of the original docum
